[FLOC-1030] Generate tutorial box with omnibus packages.

https://clusterhq.atlassian.net/browse/FLOC-1030

This needs to be merged along with its sibling issues.

Also, buildbot needs to be adjusted so that the omnibus rather than native package build triggers the tutorial builder.
Would be possible / desirable for us to store the Fedora omnibus packages in the same repo as the proper packages...since they have different names?
https://github.com/ClusterHQ/build.clusterhq.com/pull/36/files#diff-17f31ab079c7a1fb11d7f36dd747e655R392